No Power to ETBC7, 7-Way Trailer Connector After Installation

Question:

I recently installed the etbc7 and 4 way controller. I am getting full power to the 4 way portion, turn signals, brakes and lights using my voltmeter and the enclosed circuit test light. However, I am getting no power to the 7 way portion. The black power line has power just before entering the back of the ETBC, but the pins in the 7 way portion have no power. Any suggestions, or is the ETBC7 defective? Thanks.

asked by: Michael T

Expert Reply:

In order for the # ETBC7 to work properly you have to make sure that it is grounded to the vehicle frame at a place that is clean and free of corrosion. The light functions should all work if you just have the 4-Way plugged into the ETBC7 and it is properly grounded. Then when you hardwire in the black wire for 12 volt power, blue wire from a brake controller, and purple wire for reverse lights, those will all start working. but nothing will work or work properly unless the white wire is grounded to the frame.

Make sure that you have followed the ETBC7 installation instructions linked in an FAQ for you, just to be sure.

If everything is installed and grounded properly and you are still not getting any power to the pins on the 7-Way then there could be something wrong inside the 7-Way part. You can take it apart to make sure the wires are all attached correctly. If they are not then making the attachments should solve the problem. But if they are all attached correctly and it still does not work then there is some issue with it and it would need to be replaced.

expert reply by: Michael H